1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kifflom [539]
3 years ago
8

what is the sum of a 7-term geometric series if the first term is −6, the last term is −24,576, and the common ratio is −4? −32,

766 −19,662 19,662 32,766
Mathematics
1 answer:
Lena [83]3 years ago
7 0
Sum of ggeo metric sequence is

Sn=\frac{a1(1-r^n)}{1-r}

n=which term
a1=first term
r=common ratio


so
n=7
a1=-6
r=-4

Sn=\frac{-6(1-(-4)^7)}{1-(-4)}
Sn=\frac{-6(1-(-16384))}{1+4}
Sn=\frac{-6(1+16384)}{5}
Sn=\frac{-6(16385)}{5}
Sn=\frac{-98310}{5}
Sn=-19662

answer is 2nd option os -19662



You might be interested in
List the perfect squares between 50 and 200. Find each spare root.
vazorg [7]
Sqrt 64 is 8,
sqrt 81 is 9
sqrt 100 is 10,
sqrt 121 is 11,
sqrt 144 is 12,
sqrt 169 is 13,
and sqrt 196 is 14.
5 0
3 years ago
The points (4, 5), (−1, 7), (−2,−2), and (6.5,−10.5) reflected in the x-axis followed by the y-axis are (−4,−5), (1,−7), (2, 2),
Triss [41]

Reflecting the points in the y-axis followed by the x-axis gives the same result as x-axis followed by the y-axis

<h3>Transformation</h3>

Transformation is the movement of a point from its initial location to a new location. Types of transformation are<em> rotation, reflection, translation and dilation.</em>

If a point A(x, y) is reflected along the x axis, the new point is A'(x, -y). If a point A(x, y) is reflected along the y axis, the new point is A'(-x, y).

Given the points (4, 5), (−1, 7), (−2,−2), and (6.5,−10.5). If it is reflected along the y axis it gives (-4, 5), (1, 7), (2,−2), and (-6.5,−10.5). If it is then reflected along the x axis it gives (-4, -5), (1, -7), (2, 2), and (-6.5, 10.5).

Reflecting the points in the y-axis followed by the x-axis gives the same result as x-axis followed by the y-axis

Find out more on reflection at: brainly.com/question/14062035

8 0
2 years ago
−8/9⋅5/6 pls only correct answers. will give 30 points
Ivan

Answer:

- 20/27

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Lucy has scored 19 , 20 , and 29 points in her three basketball games so far. How many points does she need to score in her next
Ipatiy [6.2K]

She needs 28 points. In her previous 2 games, she got 68 points. In order to average 24 points, you need 96 points in 4 games. 96-68=28

6 0
2 years ago
A student loses a uniforms
Anna35 [415]

Answer:

Please ask a question so the community can help answer it and it has to be a school subject not a real life situation.

6 0
3 years ago
Other questions:
  • What might be useful to know how many squares are in stage n <br> please i need help
    11·1 answer
  • I will give brainliest and 50 points pls help ASAP ​
    8·2 answers
  • in february, ayanna's electricity bill was ninety-two dollars. this was at least 3 dollars more than one-half her gas bill. writ
    7·1 answer
  • Simplify<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B4%7D%20%20%5Cdiv%201%20%5Cfrac%7B3%7D%7B4%7D%20" id="TexFormul
    13·1 answer
  • (7y2 - 3y)-(4y2 + 2y'- 2)
    14·1 answer
  • Whats the slope of 0, -2 and -4,0?​
    13·1 answer
  • A square tile has a side length of 10 cm what is the area of the tile
    10·2 answers
  • The sales at a particular bookstore grew from $2104 million in 2000 to $3881 million in 2005. Find an exponential function to mo
    8·1 answer
  • ASAP I DONT KNOW HOW TO DO THIS.
    5·2 answers
  • Draw a picture of a line and a point that is not on the line. Draw in the shortest distance from the point to the line, What do
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!